Borhidi Attila: A Zselic erdei (Dunántúli Dolgozatok Természettudományi Sorozat 4., 1984)
The Fago-Colurneion suballianoe is considered by Glavac a belonging one to the hairy oakwoods. 8. The forests of Zselic can be classified in 6 associations. Three of them ars azonal alluvial forest associations: Aegopodio-Alnetum, Carici acutiformiAlnetum and Fraxino pannonicae-Ulmetum. Climax forest are represented by a hornbeamoakwood and a beechwood association: Helleboro dumetorum-Carp inetum and Vicio oroboidi-Fagetum.Finally, the extrazonal oakwoods developed in smaller stands are represented by a single association: the silver linden-turkey oak forest /Tilio argenteae-Quercetum dalechampii-cerris/. 9.Some authors classifying the riverside and alluvial forests have broken up the order Populetalia , regarding the riverside willow-forests and buschforests as a separate class Salicetea purpureae while concentrating the otner alluvial forest associations in the Alno-Padion alliance and palcing them into the order Fagetalia. This way of'classification does not take into account the following: a/ Many southern and southeastern European riverside ana alluvial forest associations exhibit neither Salicetea nor Fagetalia characters, and cannot be assigned to the order of the alluvial»forests in the evergreen zone /Platanetalia/ either. b/ The suballiances Alnion glutinosae-incanae and Ulmion included in AlnoPadion are alliances fairly distinet fron one another both in geographical distribution and altitudinal level . c/ Unlike the new vicariänt alliances of beechwoods the Alno-Padion alliance is a too large and heterogenous unit. It is therefore more correct to regard the remaining part of Populatealia furthes on as an order named Alno-Fraxinetalia, contrasted with Fagetalia which contains the true beechwood associations. 10. The alder galleries along creeks with fresh water supply in Zselio belong to the Aegopodio-Alnetum association. In addition to the 3 geographic variants differentiated so far the south Trans'danubian stands /in Somogy, Zselic and Mecsek/ as a fourth variant are to be included in it under the name Aegopodio-Alnetum praeillyricum, which form a transition to the southeastern • European alder-ashwoods /Alno-Fraxinetum angustifoliae/. 11. The alder galleries developing in the lower part of the valleys, periodically flooded by steady waters belong to the association Carici acutif'ormiAlnetum, which combines features of alluvial forests and swamp forests. As opposed to the submontane character of Aegopodio-Alnetum, this association shows a closer sociological relationship to the lowland gallery forests. 12. The Ulmion alliance is represented by ash-elm-oak alluvial forests /Fraxino pannonicae-Ulmetum/ developing in wider valleys, mainly at the margin of the hill-country. The stands occurring in Zselic can be identified as the southern, praeillyricum variant of the association; they are close to the Slavonian oak galleries in composition. In the study area four subassociacions arf dsitinguished regarded at the same time as forest types: a/ fresh, pilwort type /ficarietosum/ b/ fresh-semihumid, false-brome type /brachypodietosum silvaticae/ c/ humid, tussock-grass type /deschampsietosum/ d/ wet, bog-sedge type /caricetosum acutiformis/ 13- The hornbeam-sessile oakwoods of the hill-country together withothe stands of similar composition in Somogy and partly in Zala county are placed 143
